Diamondback Bicycles  Axis Sport Mountain Bike with 27.5-Inch Wheels Axis 27.5" Butted 6061-T6 Aluminum Frame SR Suntour XCR-LO 27.5 fork with 100mm travel and Speed Lock SRAM S600 Alloy Arm Crankset 32h Diamondback SL-7 Double wall Rims Avid DB-1 Hydraulic Disc Brakes with 180mm front and 160mm rear rotors